Chaeles paekin



(NO Model.) O

O. PARKIN.

OOMPOUND INGOT MOLD. O NO. 347,636. Patented Aug. 17, 1886.

WITNESSES? V 7 INVENTO BWQQWM a fi WO @ZMM h /1w UNITED STATES PATENTOFFICE.

CHARLES PARKIN, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO MILLER, METCALF& PARKIN, ALL OF SAME PLACE.

.COMPOUND-INGOT MOLD.

SPECIFICATION forming part of Letters Patent No. 347,636, dated August17, 1886.

Application filed May 18, 1886. Serial No. 202,523.

To all whom it may concern.-

Be it known that I, CHARLES PARKIN, residing at Pittsburg, in the countyof Allegheny and State of Pennsylvania, a citizen of the United States,have invented or discovered certain new and useful Improvements inIngot-Molds, of which improvements the following is a specification.

In the accompanying drawings,which make part of this specification,Figure l is a top plan view of my improved mold for casting compoundingots. Fig. 2 is a View of the same in side elevation. Fig. 3 is asimilar view, a portion of one of the walls being broken away. Fig.4isatransverse sectional view on the line 3 y, Fig. 3. Figs. 5 and 6 aredetail views, on an enlarged scale, of portions of the removablepartition and the buttress. Fig. 7 is a section of a modification.

The invention herein relates to certain improvements in molds forcasting compound ingotsi. e., such as contain two or more kinds orgrades of metal-and has forits ob-- ject such a construction andarrangement of parts as will permit of the quick and easyremoval of thepartition slab or plate after the casting of one kind or grade of metaland to this end the invention consists in the constrnction andcombination of parts, substantially as hereinafter described andclaimed.

The ingot-mold 1, composed of two separable parts, is of the usual formand construction, said parts being held together by the bands 2 andwedges 3, and supported on a suitable base, 4. After the parts of theingot have been secured together on the base 4, a metal slab, 5, isarranged transversely-across the mold, said slab being supported inposition on one side by a removable post or buttress, 6. The slab orpartition 5 should be 'of such a width that the joint between its edgesand the sides of the mold will be sufficiently tight to prevent the flowof metal there- -in, and the thickness of the slab should be such as toavoid any liability of its being warped or twisted out-of shape by theheat of the molten metal. Thesupporting post or buttress 6 is madeelliptical or approximately so in crosssectiomand is so proportionedthat the longer axis of the ellipse is equal to the distance from therear side of the slab when in position to the side of the ingot-mold,all as clearly shown in Fig. 1. This construc- (No model.)

tion of support or buttress affords a comparatively narrowbearing-surface against the rear 5 side of the slab and the side of themold; hence a very slight movement or rotation of the buttress will besufficient to permit its withdrawal from the mold. The slab or partition5 is provided with an eye, 7, or other 4 port or buttress6 is arrangedbetween the slab and the side of the mold, the buttress being so turnedas to bear at the ends of its longest axis against the slab and side ofthe mold. The metal is then cast in the space between the slab and theside of the mold, as shown 3 in'Figs. 3 and 4. As soon as this metal hasset the buttress is rotated from engagement with the slab and thenwithdrawn from the mold. Then the slab is pulled back away from the castmetal and withdrawn,and finally the space j left in the mold is filledwith another grade or kind of metal. By employing different sizes ofbuttresses three or more grades of metal may be cast in'the same mold,as will be readily understood; -or two slabs or partitions 5 1 may bearranged in the mold, as shown in Fig. 7, one buttress 6 being placedbetween them, said partitions and buttress being removed after the endsof the mold have been filled; or. if it is desired to cast the centralportion of the ingot first, two buttresses may be placed between theslabs and the ends of the molds,as indicated in dotted lines in Fig.7.

I claim herein as my invention 1. The combination of an ingot-mold,amovable slab or partition arranged transversely of the mold, and anelliptical support or buttress for bracing or supporting the slab inplace. substantially as set forth.

2. The combination of an ingot-mold,a movable slab or partition arrangedtransversely of the mold, and an elliptical support or buttressinterposed between the slab and the side of the mold, substantially asset forth.

In testimony whereof I have hereunto set my hand.

CHARLES PARKIN.

Witnesses:

DARWIN S. WOLCOTT, O. M. CLARKE.

